Construction Insurance Guide: What Coverage Do You Actually Need?

Insurance is one of those things you hate paying for until you need it. And in construction, the “need it” moments can wipe out your entire business in a single day.

A worker falls off scaffolding. A backhoe hits a gas line. A finished roof leaks and destroys the homeowner’s living room. Without the right coverage, any of these turns from a bad day into a bankruptcy filing.

The problem is that construction insurance is confusing. There are a dozen different policy types, every state has different requirements, and your agent is trying to sell you everything on the menu. So how do you know what you actually need?

This guide breaks it down. We’ll cover every major type of construction insurance, which ones are required, what they typically cost, and the gaps that catch contractors off guard.

General Liability (GL) Insurance

General liability is the foundation of your insurance program. If you carry nothing else, you carry this.

GL covers third-party claims for:

• Bodily injury: A visitor trips over materials on your jobsite and breaks an ankle.
• Property damage: Your crew accidentally damages a neighbor’s fence while grading a lot.
• Completed operations: A deck you built last year collapses and injures someone.
• Personal and advertising injury: Slander, libel, or copyright claims related to your business.

Is It Required?

Technically, no state law forces you to buy GL insurance. But practically, yes. Almost every GC, property owner, and lender requires it before you can bid on or start a project. Many state licensing boards also require proof of GL to issue or renew your contractor’s license.

Typical Costs

GL premiums are based on your revenue, payroll, trade classification, and claims history.

• Small contractors (under $500K revenue): $2,000 to $5,000 per year
• Mid-size contractors ($500K to $5M revenue): $5,000 to $15,000 per year
• Larger contractors ($5M+ revenue): $15,000 to $50,000+ per year

High-risk trades like roofing, demolition, and excavation pay significantly more than painters or finish carpenters.

Common Limits

Most project owners require minimum GL limits of $1 million per occurrence and $2 million aggregate. Larger commercial projects often require $5 million or more, which is where umbrella policies come in.

Workers Compensation Insurance

Workers comp is the one policy that’s almost universally required by state law. If you have employees, you need it. Period.

Workers comp covers:

• Medical expenses for work-related injuries and illnesses
• Lost wages while an employee recovers
• Disability benefits for permanent injuries
• Death benefits for fatal workplace accidents

Is It Required?

Yes, in almost every state. The threshold varies. Some states require it with just one employee. Others kick in at three, four, or five employees. Texas is the only state where it’s technically optional, but going without it is a massive gamble.

Typical Costs

Workers comp premiums are calculated using your payroll, state rates, trade classification codes, and your Experience Modification Rate (EMR or mod rate).

• Low-risk trades (office staff, estimators): $0.50 to $2.00 per $100 of payroll
• Medium-risk trades (electricians, plumbers): $3.00 to $8.00 per $100 of payroll
• High-risk trades (roofers, ironworkers): $10.00 to $30.00+ per $100 of payroll

A roofing company with $1 million in payroll could easily pay $150,000 to $300,000 per year in workers comp premiums. Your mod rate has a huge impact. A good safety record can push it below 1.0 and save you thousands. A string of claims pushes it above 1.0 and your premiums skyrocket.

Lowering Your Workers Comp Costs

The single biggest thing you can do is invest in safety. Fewer claims mean a lower mod rate, which means lower premiums. Document your safety program, run regular toolbox talks, and track incidents carefully. Good project management software helps you keep safety documentation organized and accessible for audits.

Builder’s Risk Insurance

Builder’s risk (also called course of construction insurance) covers the structure being built and the materials on site against damage from fire, wind, theft, vandalism, and other covered perils.

Is It Required?

It depends on the contract. On commercial projects, the owner typically purchases builder’s risk and names the GC and subs as additional insureds. On residential projects, the GC often needs to carry it. Check your contract carefully.

Typical Costs

Builder’s risk premiums are based on the total project value, construction type, and location.

• General rule: 1% to 5% of total construction value
• A $500K residential build: $2,500 to $10,000
• A $5M commercial project: $25,000 to $100,000

Policies in hurricane, tornado, or wildfire zones cost more. Wood-frame construction costs more than steel or concrete.

Watch Out For

• Flood and earthquake are usually excluded. You need separate endorsements or policies.
• Soft costs coverage: If a covered loss delays the project, soft costs coverage pays for extended overhead, loan interest, and other carrying costs. Add this endorsement.
• Materials in transit and off-site storage: Make sure your policy covers materials before they reach the jobsite.

Commercial Auto Insurance

If your company owns, leases, or regularly uses vehicles for business, you need commercial auto insurance. Your personal auto policy does not cover business use.

Commercial auto covers:

• Liability for accidents your drivers cause
• Physical damage to your company vehicles
• Medical payments for injuries in covered accidents
• Uninsured/underinsured motorist coverage

Is It Required?

Yes. Every state requires auto liability insurance, and personal policies exclude business use. If an employee driving a company truck causes an accident and you only have personal insurance, your claim gets denied.

Typical Costs

• Single vehicle (pickup truck): $1,500 to $3,000 per year
• Small fleet (5 to 10 vehicles): $8,000 to $20,000 per year
• Larger fleets with heavy equipment: $20,000 to $75,000+ per year

Don’t forget hired and non-owned auto coverage. This protects you when employees use their personal vehicles for company business, like driving to pick up materials.

Umbrella and Excess Liability Insurance

An umbrella policy sits on top of your GL, auto, and workers comp policies. It kicks in when a claim exceeds the limits of your underlying coverage.

Why You Need It

Construction claims can be enormous. A serious injury, a multi-vehicle accident, or a major property damage claim can easily blow past a $1 million GL limit. An umbrella policy provides an additional layer, typically $1 million to $10 million, for relatively low cost.

Typical Costs

• $1 million umbrella: $1,000 to $3,000 per year
• $5 million umbrella: $3,000 to $10,000 per year
• $10 million umbrella: $5,000 to $20,000 per year

This is some of the cheapest protection you can buy relative to the coverage it provides. Many GCs and project owners require umbrella coverage as part of their contract requirements.

Professional Liability (Errors and Omissions)

Professional liability insurance covers claims arising from professional mistakes, errors, or negligence in your services. This is different from GL, which covers physical damage. Professional liability covers financial losses.

Who Needs It?

• Design-build contractors
• Construction managers
• Engineers and architects
• Any contractor providing design services, consulting, or professional recommendations

If you only swing a hammer and never provide design input, you may not need this. But the line between “building to spec” and “providing design recommendations” is blurry. If a client ever asks your opinion on design and you give it, you could face a professional liability claim.

Typical Costs

• Small design-build firms: $2,500 to $7,500 per year
• Mid-size firms: $7,500 to $25,000 per year
• Large firms: $25,000 to $100,000+ per year

Inland Marine Insurance

Despite the name, inland marine has nothing to do with boats. In construction, it covers your tools, equipment, and materials while they’re being transported or stored at jobsites.

What It Covers

• Tools and small equipment (think: lasers, saws, generators)
• Rented or borrowed equipment
• Materials in transit or stored on site
• Mobile equipment not covered by auto policies

Why It Matters

Your GL policy does not cover your own equipment. If someone steals $50,000 worth of tools from your trailer, GL won’t pay for it. Inland marine will.

Typical Costs

• Contractor’s equipment floater: $1,000 to $5,000 per year depending on total value
• Installation floater (materials): Usually 1% to 3% of material value

If you’ve ever had a jobsite theft, you know the pain. Inland marine is one of those policies that pays for itself the first time you need it.

Surety Bonds

Surety bonds are not insurance, technically. They’re a three-party agreement between you (the contractor), the project owner (the obligee), and the surety company. But they’re sold through insurance agents and function as part of your overall risk management program.

Common Bond Types

• Bid bond: Guarantees you’ll honor your bid if selected. Usually required on public projects.
• Performance bond: Guarantees you’ll complete the project per the contract. The surety steps in if you default.
• Payment bond: Guarantees you’ll pay your subs and suppliers. Protects the owner from mechanic’s liens.
• License and permit bonds: Required by many states and municipalities to get or maintain your contractor’s license.

Typical Costs

Bond premiums are based on the contract value and your financial strength.

• Bid bonds: Usually free or very low cost
• Performance and payment bonds: 1% to 3% of contract value
• License bonds: $100 to $500 per year

Strong financials (good credit, solid balance sheet, consistent profitability) get you better bonding rates and higher bonding capacity. If you can’t get bonded, you can’t bid on public work or many large private projects.

Which Policies Are Required vs. Optional?

Here’s a quick breakdown:

Almost always required:

• General liability
• Workers compensation (if you have employees)
• Commercial auto (if you use vehicles for business)

Often required by contract:

• Builder’s risk
• Umbrella/excess liability
• Surety bonds (public projects)

Situational but important:

• Professional liability (design-build work)
• Inland marine (valuable tools and equipment)
• Pollution liability (environmental exposure)
• Cyber liability (if you handle customer financial data)

How to Shop for Construction Insurance

Finding the right insurance program takes more effort than calling one agent and accepting a quote. Here’s how to do it right.

1. Work With a Construction Specialist

General insurance agents sell auto and homeowner’s policies all day. Construction insurance is a specialty. Find an agent or broker who focuses on contractors and understands your trade, your contracts, and your risk profile. Ask how many contractor clients they have. If you’re their first, keep looking.

2. Get Multiple Quotes

Get quotes from at least three agents or brokers. Make sure they’re quoting the same coverage limits and deductibles so you can compare apples to apples. The cheapest quote isn’t always the best. Look at the carrier’s financial strength rating (A.M. Best), claims handling reputation, and any exclusions buried in the policy language.

3. Review Your Contracts First

Before buying insurance, review the contracts you typically sign. They dictate the coverage types and limits you need. There’s no point in buying $1 million in GL if every GC you work for requires $2 million.

4. Bundle When Possible

Many carriers offer a Business Owner’s Policy (BOP) or a Contractor’s Package Policy that bundles GL, property, inland marine, and other coverages at a discount. Bundling simplifies your program and often saves 10% to 20% compared to buying each policy separately.

5. Review Annually

Your business changes every year. Revenue grows, you add employees, you take on bigger projects, you move into new trades. Review your entire insurance program with your agent at least once a year to make sure your coverage keeps pace.

Common Coverage Gaps That Leave Contractors Exposed

Even contractors who think they’re fully covered often have dangerous gaps. Here are the ones that bite most often.

Subcontractor Insurance Failures

You require your subs to carry insurance. Great. But did you actually verify it? Did you check that their policy was active on the day of the incident? Did you confirm you’re listed as an additional insured? One missed verification can leave you holding the bag. Track sub insurance documents and expiration dates in your project management system so nothing slips through.

Completed Operations Gaps

Some GL policies exclude or limit completed operations coverage. That means if a project you finished six months ago has a failure that causes damage or injury, you might not be covered. Make sure your GL includes completed operations, and understand how long that coverage extends after project completion.

Equipment and Tool Theft

GL does not cover your own property. If you don’t have inland marine coverage and someone breaks into your jobsite trailer, those losses come out of your pocket. With tool theft on the rise, this is a gap you can’t afford.

Pollution Exclusions

Standard GL policies exclude pollution claims. If your crew accidentally ruptures a fuel tank, disturbs asbestos, or causes a chemical spill, your GL policy won’t respond. You need a separate pollution liability policy or endorsement, especially if you do demolition, renovation, or excavation work.

Auto Coverage for Employee Vehicles

If employees use their personal vehicles for company business and cause an accident, your company can be held liable. Hired and non-owned auto coverage fills this gap. It costs very little and protects you from a risk you might not even realize you have.

Certificate of Insurance (COI) Requirements

Certificates of insurance are the currency of construction contracting. You need them, your subs need them, and you’ll manage hundreds of them over the course of a year.

What a COI Shows

A COI is a one-page summary showing:

• Policy types and numbers
• Coverage limits
• Policy effective and expiration dates
• Named insured
• Additional insureds
• Certificate holder

Managing COIs

Tracking COIs manually is a nightmare. Policies expire, subs forget to renew, and you end up chasing paperwork instead of building. Using project management tools with document storage lets you keep all COIs organized by project and subcontractor. Set reminders for expiration dates so you’re never caught off guard.

Good job costing practices also help you budget accurately for insurance costs across projects. When you track insurance as a project cost, you can see the real impact on your margins and price future work accordingly.

What Insurance Costs by Company Size

Here’s a rough annual insurance budget by company size to help you plan:

Solo contractor or small crew (1 to 5 employees):

• GL: $2,000 to $5,000
• Workers comp: $3,000 to $15,000
• Commercial auto: $1,500 to $5,000
• Inland marine: $500 to $2,000
• Total: $7,000 to $27,000 per year

Mid-size contractor (10 to 25 employees):

• GL: $5,000 to $15,000
• Workers comp: $20,000 to $75,000
• Commercial auto: $5,000 to $15,000
• Umbrella: $2,000 to $5,000
• Inland marine: $2,000 to $5,000
• Total: $34,000 to $115,000 per year

Larger contractor (25 to 100 employees):

• GL: $15,000 to $50,000
• Workers comp: $75,000 to $300,000
• Commercial auto: $15,000 to $50,000
• Umbrella: $5,000 to $20,000
• Professional liability: $5,000 to $25,000
• Inland marine: $3,000 to $10,000
• Surety bonds: Varies by project
• Total: $118,000 to $455,000+ per year

These are rough ranges. Your actual costs depend on your state, trade, claims history, and the specific coverage you need. But they give you a starting point for budgeting.

Keep Your Insurance Documentation Organized

Insurance paperwork is one of those things that piles up fast. Policies, endorsements, COIs, audit worksheets, claims correspondence. If you can’t find what you need when you need it, you’re in trouble.

The best approach is to keep all insurance documents in one central system that your whole team can access. Projul’s project management platform lets you store documents by project, set up reminders for renewals and expirations, and keep everything organized without filing cabinets full of paper.

When an auditor shows up or a GC requests proof of coverage, you want to pull it up in seconds, not dig through email threads from six months ago.

Ready to get your project documentation and compliance tracking in order? Check out Projul’s pricing and see how it fits your operation.

Final Thoughts

Construction insurance isn’t exciting. Nobody gets into this business because they love reading policy language. But the contractors who take insurance seriously are the ones who survive the inevitable bad days.

Get the coverage you need. Verify your subs have theirs. Review your program every year. And keep your documentation organized so you can prove it all when it matters.

The cost of insurance stings every month. The cost of not having it can end your company overnight.